My clothes will not dry. Air blows, but it does not get hot. I have a gas/electric dryer. It is a Kenmore dryer 70 Series.

Because you have a gas dryer, your problem is probably caused by the ingition panel.Generally, with a gas dryer, there is an ignition device that heats to a specific temperature and this causes the gas to ignite. When this electric ignition fails to work, the gas will not ignite and there will be no heat. I had this happen and had to call a professional. It was a simple matter of installing a new ignition device and it worked perfectly for years. I hope this helps! If it is a new dryer, check to see if this part might be covered under warranty.If this helps solve your problem, please come back to Fixya and rate my advice